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HomeScaleAircraftScale HeliScale Helicopter Main Discussion › OS .50 needle setting with Century Scale muffler
04-04-2009 02:44 PM  9 years agoPost 1
Aaron1100us

rrApprentice

Cedar Rapids, Iowa

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I have an OS .50 SX-H (non hyper) with a Century Heli Scale muffler. The engine has a new ring in it so I started off running rich. I've run through about two tanks now. The OS manual syays to run at 2 full turns out. I started at about 2 3/4 turns out so it would run rich to break in the ring.

I now have it under two full turns and its still running rich.

For those of you who have a OS .50 and the Century Scale muffler, what are your needle settings?

Thanks.

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04-04-2009 05:18 PM  9 years agoPost 2
Aaron1100us

rrApprentice

Cedar Rapids, Iowa

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Running Cool Power 30%. Just trying to get a general idea where people have theirs set at. Wondering if the Century Muffler changes the needle settings much. I'm under 2 turns and its still rich.

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04-04-2009 07:50 PM  9 years agoPost 3
scott kieper

rrNovice

neenah wi usa

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my needle at 1 1/2 in my scale airwolf and runs great

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04-05-2009 12:31 AM  9 years agoPost 4
oldfart

rrProfessor

Vancouver, Canada

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Don't forget that to set for a smooth hover and transition you will have to set the idle screw after the main is set for full poweer.

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04-05-2009 08:12 PM  9 years agoPost 5
Aaron1100us

rrApprentice

Cedar Rapids, Iowa

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Ok, thanks. Hoping it ges nice out again soon, kinda crappy out this weekend.

Those this muffler rob much hp from the engine or is it a pretty decent muffler?

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04-15-2009 03:07 PM  9 years agoPost 6
Wimbledon99

rrVeteran

UK

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Hi,

Can I ask what the noise levels are like with the Century Scale Muffler please?

I'm looking at one for an Airwolf body but have been told they'll hear it miles away

Thanks

3D?? No - just another input error!!!

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04-15-2009 05:51 PM  9 years agoPost 7
imnxtc

rrVeteran

BC.Canada

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The one I had in a Long Ranger and a Bell 222, set for a nice scale type of rotor speed (1450 to 1500) were checked at various events by SPL metters at 85 to 86db. This is more quite then most of the airplanes operated at our field (it has a 92db limit).

Ditto for a club mate with a H-500D.

The key to any noise is to keep the rpm down, which is easy fro scale machines because with them you do not need or want "pop" type control response which requires high rotor speeds.

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04-15-2009 11:47 PM  9 years agoPost 8
Wimbledon99

rrVeteran

UK

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Cool

Might give one a go

Many Thanks

3D?? No - just another input error!!!

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